Support for power tools



Aug. 16, 1932. E. w. STEVENS ET AL SUPPORT FOR POWER TOOLS Filed June 6, 1928 INVENTOR. [ah/0rd W ffevens Dona/d ,4 you/ g B BY vgwu mm A TTORNEY.

Patented Aug. 16, 1932 -A'ra r Pics j EDWARD 1V. STEVENS AND DONALD A. YOUNG, OF DETROIT, MICHIGAN, AS SIGNORS TO CHICAGO PNEUMATIC TOOL COMPANY, OF NEW YORK, N. Y.', CORPORATION OF new JERSEY i SUPPORT FOR POWER TOOLS Application filed June a, 1928. Serial No. 283,438.

This invention relates to supports for pow er tools, particularly of the pedestal or column type.

One object of'the invention is to provide a compact structure of the described type having improved features of adaptability and adjustability. Anotherobject is to enclose and protect the control mechanism. Another ob ject is to provide for convenient diversion of 1 the exhaust for a fluid pressure tool away from the operator. Other objects will be apparent from the detailed description which follows. i

. In order to illustrate the invention, one coni crete embodiment thereof is shown in the accompanying drawing in which:

Fig.1 is a side elevational view showing portions of the power tool and control device therefor in section; V

Fig. 2 is a detailed viewon a greatly enlarged scale showing the upper end of the pedestal support and the power tool control device in section; and

Fig. 3 is a detailed sectional view substan- 23 tially on the line 33 of Fig. 1.

The embodiment of the invention chosen for the purpose of illustration comprises a support in the form of a pedestal having'a base A formed with a hollow upright portion in which is adjustably supported a hollow post B, preferably cylindrical in form,

which is held in adjusted position by clamping bolts 4 which extend through flanges in the slotted upper end of base A. Supported upon post B for axial and radial adjustment are arms C and D, which may be of any suitable shape and extent. the inner ends of which are formed as slotted collars encircling post B and provided with flanges through which extend clamping bolts similar to those used on base A andindicated by the same reference character 4. Inaccordance with the usual practice one of the arms, such as C, is arranged to support the work while the other a arm D carries a power tool of any suitable or desired type. Inasuch as the apparatus herein shown is to be used for riveting, arm

C supports an anvil set a while arm D supports a complete percussive motor of the fluid pressure type.

The motor itself, indicated at 5, is slidably mounted in a casing 6, the motive fluid admitted to actuate the motor being operable to move the same toward the work and a spring 7 being utilized to withdraw the motor. The space between motor 5 and casing 6, in which spring 7 is housed, is utilized for the exhaust of the motor and means associate ed with the securing'of the power tool to its supporting arm D are utilized for directing the exhaust away from the operator. To this end the outer portion of arm D is formed as an elongated tang cl which extends into a slot provided by spaced flanges 8 on tool casing 6 3), bolts 9- extending through bores in flanges 8 and tang d to hold the power tool on its supporting arm. As clearly shown in Fig. 3 and indicated by dotted outline in Fig. 1, tang cl does not extend to the'bottomof the slot between flanges 8 of the tool casing but leaves a space 10 which is'utilized .as an exhaust passage, ports'll being providedin casing 6 to permit'the exhaust motive'fluid within the casing to reach passage 10 vlvhich directs the same axially of the power too c I The motive fluid supply to the power tool 5 is provided by a line 12 which includes a control device, or throttlevalve, 13, which is supported by one ormore brackets 14; on arm D above and in axial alignment with :post B. Since the control device 13 may be of any suitable ordesired type'and, as shown, is wholly conventional, description thereof is omitted. The means for actuating the control device forms an important feature of the lnventlon, the arrangement being such that the parts are protected against injury and are conveniently arranged for-adjustment.

In the form shownan operating lever 15 is pivotally mounted in baseA and is provide-1i with a pro ecting pedal or'treadle 15a for actuation by the foot of the operator. Ex'

tensible and contractable linkage is provided in the hollow bore of post B and in the pedestal portion of base A. The linkage or connection comprises" telescoping rods 16 and 17, the former being hollow to receive thelatter, which is provided with screw threads throughout the greater portion of its length.

Hollow rod 16 has, at its upper'end and in threaded engagement with its exterior, a nut 18 the upper portion of which has a restricted threaded bore which is in threaded engagement with rod 17. Between the top of post B and control device 13 into which rod 1? extends, the rod is provided with a knurled portion 17 a to permit rod 17 to be conveniently rotated to screw it through nut 18 and into or out of telescoping relation with-hollow rod 16. The lower end ofr od 16 has secured thereto a clevis 19 which connects the rod to operating lever and prevents hollow rod 16 from turning. A coil spring 20 encircling the lower endot rod 16 between clevis19 and a perforated stop plate 21 in the lower portion. of the pedestal ofhase A yieldingly maintains-rod 16 in its lowermostposition and the pedal portion of lever lb in its uppermost position. The portion of rod 17, which extendsinto control device 13 has an elon ate slot 17?), which receives a cotter pin 22 to lock rod 1'? in adjusted posZ- ton. in order to adjust the length of the actuating connection tori control device 13, the operator withdraws cotter pin22, grasps the knurled portion 17a and turns it to increase or decrease the length of the telescoping connection 16, 17 and then replace cotter pin 22 after the adjustment is completed.

Fronithe above, it will be apparent that the present invention providesa support of compact and attractlve design, which provides for a wide range of adjustment to adapt, the same to widely varying requirements, that the actuating mechanism for the control of the power tool is both conveniently adj ust-.

able and also fully protected against injury, and that the attachment ofthe power tool to the supporting arm is such as to dispose of the exhaust of a fluid pressure tool in such a way as to relieve the operatorofalldiscomfort and annoyance.

, lVhile apreferredform of the invention has been herein shown and described, it is to be understood that the invention is not lim ited to the specific details thereof, but covers all changes, modifications and adaptations within the scope of the appended claims.

We claimas our invention:. 1. The combination with a fluidpressure tool of a rigid support therefor, and means securing said tool to said support and pro-' viding a tang and slot connection, said co'n nection leaving a passage between said tool and said support, and means directing the,

exhaust motive fluid of the tool intosaid passage.

2. The combination with a fluid pressure- 'toolot a support therefor, a tang on said supengagement with said member, said casinghaving an exhaust-opening directed toward said flange, and said tang being spaced-from said casing at said opening and cooperating with said flange to provide an exhaust defleeting passage in communication with said exhaust opening. I v g j 4., A support having. a base,v a-hollow post adjustable thereon, arms adjustably mounted on saidpost, a fluid pressure tool mounted upon one of said arms, motive fluidsupply means for said tool including a throttle valve, means on said tool carrying arm forsupporting said valve above and in spaced relation to said post, apedal lever mounted on said base for actuating said valve, a connection between said lever and said-valve extending through the bore of said post, and manual-1y operable means for adjusting the length of said connection and'for looking, it against change when adjusted.

5. A pedestal support for a power tool comprising a base, a hollow post adjustably. secured upon said base, means carried by said post for supporting a power tool, a throttle valve for the toolin axial alignment; with said post, a treadlemounted onsaid base, adjustable connecting means for operating said valve extending through the bore of said post between said treadle an'd said throttle valve comprisingrods having ascrew-threaded connection with each other, a clevisfor securing the lower one of said rods to'said' treadle and adapted to'prevent the lower rod from rotating with respect tothebase, a

valve stem for the throttle valve disposedin axial alignment with the upper rod, a slidable connection between the upper rod-and the valve for permitting limited reciprocating movement and manually releasable'm'eans for securingt-he upper rod tothe Valve t prevent turning,

Signed by us at Detroit, in the county of Wayne and; Stateof Michigan, this 29-th-day= of May, 1928. i p

' EDWARD W.QSTEVENS.-

DONALD A. YOUNG;

port, spaced flangeson said tool forming a slot in which said tang isreceived, means se-' curing said flanges to said tang, said tang being of insuflicientlength to fillsaid slot 

